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In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.

Ultimate Goal:

Drive heating system with only one circulator and constant circulation. Rental house, top floor apt has single loop fin-tube system on own circulator. Heats LR, BR, KIT, and Bathroom, with Taco 007 circ.

1st Flr has monoflow system with CI rads, heating front door hallway entrance for both apts, LR, DR, KIT, and Bathroom off of kitchen,

Swei, I agree with you that I would need flows and heads for all loops.

Another property that I baby-sit has mono-flow system, 2 stories, one 007 circ,all CI emitters, works well.

System I am working on has to be repiped to pumping away as now it is pumping into the return. My thought was to put on a Grundfos Alpha which gives me three mode options to vary the flow rates It should work or am I missing something.

I have a lot of properties I rent, and if I were the property owner I would just knock off $3 each floors rent in the heating months... this will be much less money and aggravation than what you are trying to do..

I have a customer that has 6 apartments with one boiler, 1 loop for each apartment, the boiler is wired to the "house" panel, each apartment has their own circulator and 845 switching relay on their own electricity, but he did this so if their electric was shut off they wouldn't have access to heat, because he had a problem with tenants letting the electric get shut off and living with extension cords from the house panel....